Security researchers at Palo Alto Networks disclosed that an old ransomware family – Bucbi ransomware – has been just revived after 2 years of silence. The Bucbi threat was discovered in 2014, and it hasn’t been registered active since then. Not only it has been revived but it has also been updated. Above, you see the original ransom note used by Bucbi in 2014’s attacks.
|Short Description||Bucbi ransomware was first spotted in 2014, but has been just revived.|
|Symptoms||The victim’s files are inaccessible and encrypted.|
|Distribution Method||Via brute-forcing RDP accounts.|
|Detection Tool|| See If Your System Has Been Affected by malware |
Malware Removal Tool
|User Experience||Join our forum to find a solution for Bucbi Ransomware.|
Bucbi Ransomware: Current Distribution
When it was first reported, Bucbi was spread via HTTP downloads and exploit kits. Now a new distribution technique has been adopted by its authors – delivery via brute-forcing RDP accounts on Internet-facing Windows servers. However, Bucbi’s code is also modified – it no longer needs Internet connection to propagate.
Learn More about Brute Force Attacks
Who Is Behind Bucbi Ransomware?
According to the ransom notes dropped by Bucbi, it’s operated by a far-right Ukrainian nationalist political party called Ukrainian Right Sector. According to Wikipedia, Right Sector has originated in 2014 as a paramilitary confederation at the Euromaidan revolt in Kiev. The group which opposes Russia became a political party on 22 March 2014. In 2014, Right Sector claimed to have approximately 10,000 members.
As for Bucbi’s recent attacks, it’s still not known whether the information about Right Sector provided in the ransom notes is accurate or falsified. However, multiple Russian identifiers have been discovered in the latest infections, which contradict to the ransomware authors’ claims of Ukrainian origin.
Bucbi Ransomware: Technical Overview
As already mentioned, Bucbi’s latest distribution depends on brute-forcing techniques and open RDP (Remote Desktop Protocol) ports. Palo Alto researchers believe that the threat actors may have used a tool named RDP Brute (Coded by z668). This is a list of the IP addresses associated with Bucbi’s latest attacks at the end of March 2016:
Researchers also believe that the attackers first targeted PoS devices but later changed their tactics to monetize their malicious attempts. Palo Alto researchers have shared some of the usernames specific to PoS systems:
Some of the usernames specific to PoS systems include strings such as BPOS, FuturePoS, KahalaPoS, POS, SALES, Staff, and HelpAssistant.
More technical details of the attack find here: Palo Alto Networks Research Center
In conclusion, the latest variant of Bucbi ransomware implies to have been employed by Right Sector. If this claim is truthful, this would mean that the Ukranian far-right party has entered cybercrime, possibly to fund their cause, Palo Alto researchers write. However:
Attribution of this particular attack is difficult as there simply isn’t enough evidence to conclusively determine who is behind it. Various conflicting evidence make it impossible to say for sure. However, what is clear is that attackers are shifting tactics in how ransomware is deployed, and ensuring their malware is constantly being updated to deter defenders.
Bucbi Ransomware Removal & Decryption
Bucbi’s cryptography is still being investigated. More details will be available soon. It’s known that after the encryption process is finished, a README.txt will be placed on the user’s desktop:
The BitCoin address mentioned in the above screenshot has a single payment of 0.00896 BTC at the time of writing. This payment, being so low in value, was likely a test transaction used. The email address of ‘email@example.com’ has ties with the Ukrainian Right Sector in a number of external publications […].
If you have been infected by Bucbi ransomware, consider following the steps below. However, since the threat is still being analyzed, there is no guarantee that encrypted files will be decrypted via any alternative methods.
- Guide 1: How to Remove Bucbi Ransomware from Windows.
- Guide 2: Get rid of Bucbi Ransomware from Mac OS X.
- Guide 3: Remove Bucbi Ransomware from Google Chrome.
- Guide 4: Erase Bucbi Ransomware from Mozilla Firefox.
- Guide 5: Uninstall Bucbi Ransomware from Microsoft Edge.
- Guide 6: Remove Bucbi Ransomware from Safari.
- Guide 7: Eliminate Bucbi Ransomware from Internet Explorer.
How to Remove Bucbi Ransomware from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Bucbi Ransomware
Step 2: Uninstall Bucbi Ransomware and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it.
Step 3: Clean any registries, created by Bucbi Ransomware on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by Bucbi Ransomware there. This can happen by following the steps underneath:
Get rid of Bucbi Ransomware from Mac OS X.
Step 1: Uninstall Bucbi Ransomware and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove Bucbi Ransomware via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove malware from your Mac
When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Remove Bucbi Ransomware from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.
Erase Bucbi Ransomware from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.
Uninstall Bucbi Ransomware from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Remove Bucbi Ransomware from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Bucbi Ransomware will be removed.
Eliminate Bucbi Ransomware from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.
Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.